Mirrored memory multi-processor system

Details Mirrored memory multi-processor system Mirrored memory multi-processor system

1994-10-26

1996-02-27

Beausoliel, Jr., Robert W.

39518204, G06F 1100

Patent

active

054955700

ABSTRACT:
A multi-processor system having mirrored memory units accessible by either processor. The term "mirrored memory" in the context of the present invention describes the ability of each of the processors to directly READ and WRITE the contents of its own local random access memory (RAM) unit and in the local RAM unit of the other, remote processor. The mirrored memory of the present invention comprises two units of triple-ported RAM, each unit interconnected by a pair of interprocessor busses to the corresponding triple-ported RAM of the remote processor. "Triple-porting" describes the three input/output ports available for accessing a RAM unit. An internal port is used by a processor to access its local RAM, while the other two ports are provided so that the same RAM can be accessed by the remote processor through the paired interprocessor busses. Each processor may READ or WRITE its own local RAM, the remote processor's RAM, or both RAM's during a single operation. The present mirrored memory design facilitates concurrent and independent execution of both processors of a pair. Concurrent execution of both processors during mirrored RAM accesses is possible because the interprocessor busses are configurable as virtual dedicated ports (one for each processor). A method is also provided for equalizing the mirrored memory units of paired processors.

REFERENCES:
patent: 3864670 (1975-04-01), Inoue et al.
patent: 4817091 (1989-03-01), Katzman et al.
patent: 4907231 (1990-03-01), Watanube et al.
patent: 4933838 (1990-12-01), Elrod
patent: 4975838 (1990-12-01), Mizuro et al.
patent: 5140593 (1992-08-01), Hayashi
patent: 5146458 (1992-09-01), Ono
patent: 5157663 (1992-10-01), Major et al.
patent: 5166936 (1992-11-01), Ewert et al.
patent: 5185884 (1993-02-01), Martin et al.
patent: 5204952 (1993-04-01), Ayers et al.
patent: 5237670 (1993-08-01), Wakerly

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